Steel Beam Sizes / AISC / WT Tees / WT4x15.5
WT4x15.5 Steel Beam Dimensions and Properties
AISC Structural tees · v16.0
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
WT4x15.5 dimensions
Not to scale. Dimensions shown for reference.
Section properties
Symbols match the steel section finder. Imperial and metric values are shown side by side.
| Property | Imperial | Metric |
|---|---|---|
| Weight | 15.50 lb/ft | 23.10 kg/m |
| Depth, d | 4.00 in | 102.00 mm |
| Flange width, bf | 8.00 in | 203.00 mm |
| tw | 0.285 in | 7.240 mm |
| tf | 0.435 in | 11.000 mm |
| Area | 4.56 in² | 2,940.00 mm² |
| Ix | 4.28 in⁴ | 1,780,000 mm⁴ |
| Iy | 18.50 in⁴ | 7,700,000 mm⁴ |
| Sx | 1.28 in³ | 21,000.00 mm³ |
| Sy | 4.64 in³ | 76,000.00 mm³ |
| Zx | 2.39 in³ | 39,200.00 mm³ |
| Zy | 7.03 in³ | 115,000.00 mm³ |
| rx | 0.97 in | 24.60 mm |
| ry | 2.02 in | 51.30 mm |
| J | 0.27 in⁴ | 111,000.00 mm⁴ |
| Cw | 0.33 in⁶ | 87,800,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT4x15.5.
Lighter in WT4
WT4x14
- Weight
- 14.0 lb/ft (-9.7%)
- Depth
- 4.03 in (+0.8%)
- Ix
- 4.2 in⁴ (-1.2%)
Heavier in WT4
WT4x17.5
- Weight
- 17.5 lb/ft (+13%)
- Depth
- 4.06 in (+1.5%)
- Ix
- 4.8 in⁴ (+13%)
Closest Iₓ in WT4
WT4x10.5
- Weight
- 10.5 lb/ft (-32%)
- Depth
- 4.14 in (+3.5%)
- Ix
- 3.9 in⁴ (-8.9%)
Similar weight in WT5
WT5x15
- Weight
- 15.0 lb/ft (-3.2%)
- Depth
- 5.24 in (+31%)
- Ix
- 9.3 in⁴ (+117%)
Source: AISC Shapes Database v16.0 · Methodology